A method for performing pressure tests on a composite pressure vessel, including providing a composite pressure vessel with at least one opening an injection of a liquid; injecting the liquid in the composite pressure vessel through the at least one opening to reach a threshold pressure; measuring an external volume variation of the composite pressure vessel; draining the liquid from the composite pressure vessel through the at least one opening; and drying an inside cavity of the composite pressure vessel with a drying gas. The drying the inside cavity of the composite pressure vessel is performed at a pressure inside the composite pressure vessel, which is lower than an external pressure. A device for manufacturing and pressure testing a composite pressure vessel.

A vehicle is provided with an interior chamber apart from a passenger compartment, and a container chamber in which a high pressure gas container is accommodated. A heat generating body is accommodated in the interior chamber. Further, in the vehicle, there are formed introduction ports through which atmospheric air is introduced into the interior chamber, a communication passage that enables communication between the interior chamber and the container chamber, and a lead-out port through which the atmospheric air is led out from the container chamber. The atmospheric air that is introduced into the interior chamber through the introduction ports flows into the container chamber via the communication passage, and furthermore, is led out to the exterior of the container chamber from the lead-out port.

The present invention is a tank for storing pressurized gas. The tank comprises at least one tubular element (1) having a wall comprising a layer of prestressed concrete (6), at least one circumferential mechanical reinforcing layer (8), at least one axial mechanical reinforcing layer (7) and a sealing layer (5). The concrete from which the layer of prestressed concrete is made is chosen from ultra high performance fiber-reinforced concretes.

A pressure vessel system for a vehicle includes a pressure vessel and a fuel line. The system also includes a blocking unit which, in an inoperative state, prevents fuel from passing out of the pressure vessel into the fuel line. A control unit for the blocking unit is designed, under the action of electrical energy, to transfer the blocking unit from the inoperative state into an active state in which fuel can pass out of the pressure vessel into the fuel line. Furthermore, the system includes an electrically conducting connection to an electrical system of the vehicle via which electrical energy can be provided for controlling the blocking unit. In addition, the system includes an access interface unit via which electrical energy for controlling the blocking unit can be provided from an external energy supply if no electrical energy is available from the electrical system of the vehicle.

The invention relates to a safety valve system (10a; 10b; 10c) for a combustion gas vehicle (11), having: an excess pressure valve unit (13) with a first gas outlet (14) for discharging excess pressure gas (29) out of a combustion gas tank (12) of the combustion gas vehicle (11) in a first outlet direction (RI) and at least one additional gas outlet (15, 16, 17) for discharging excess pressure gas (29) out of the combustion gas tank (12) in at least one additional outlet direction (R2) which differs from the first outlet direction (RI); a state detection unit (18) for detecting a vehicle position and/or a vehicle orientation of the combustion gas vehicle (11) and/or a surroundings state of the combustion gas vehicle (11); and an adjustment unit (19) for adjusting the discharge of excess pressure gas (29) through the first gas outlet (14) and/or through the at least one additional gas outlet (15, 16, 17) on the basis of the detected current vehicle position, the detected current vehicle orientation, and/or the detected surroundings state. The invention additionally relates to a combustion gas vehicle (11), to a computer program product (26), and to a storage means (26) with a computer program product (26) stored thereon.

A computer-implemented method of supplying a fuel gas to a fueling system is disclosed. The method may include pre-fill inerting the fueling system; leak-checking the fueling system; charging a pilot subsystem with the fuel gas; filling the fueling system with the fuel gas; and post-fill inerting the fueling system. In many implementations, the fueling system may be associated with a boat. The fuel gas may be hydrogen and may be supplied to a fuel cell that converts the hydrogen to electrical energy to power a propulsion system of the boat.

An energy storage assembly for a motor vehicle, including a traction battery for storing electrical energy. A flexible pressure element, which is filled with gas or liquid is disposed on the outside of the traction battery or on the inside of a covering component for the traction battery, the gas or the liquid is contained at atmospheric pressure within the flexible pressure element. A pressure sensor is connected to the flexible pressure element, and by which collision-induced pressure fluctuations in the flexible pressure element can be sensed.

An energy storage assembly for a motor vehicle, including a traction battery for storing electrical energy. A flexible pressure element, which is filled with gas or liquid is disposed on the outside of the traction battery or on the inside of a covering component for the traction battery, the gas or the liquid is contained at atmospheric pressure within the flexible pressure element. A pressure sensor is connected to the flexible pressure element, and by which collision-induced pressure fluctuations in the flexible pressure element can be sensed.

The invention relates to a device for storing compressed gas, for example hydrogen or natural gas, comprising a storage line (1) to which at least one compressed gas container (2) is connected via a valve (3). According to the invention, the storage line (1) has at least one connection port (4) for the gas-tight connection of the at least one compressed gas container (2), and a safety element (5), which has a filter function and a shutoff function, is integrated in the connection port (4). The invention further relates to a vehicle having a device according to the invention for storing compressed gas.

The present disclosure relates to a field of soil-covered tank and includes a gas collecting and exhausting unit, a safety sealing unit and a closed-loop ventilation unit; a gas collecting pipe is located in a valve chamber and a channel, and the gas collecting pipe, a fan and an exhaust pipe are connected in sequence; a gas monitor of the safety sealing unit is used for monitoring concentration of combustible gases, a controller is connected to the gas monitor, a temperature sensor, a valve and a fan by conducting wires, and the controller set a warning temperature value and a warning gases concentration value and is capable of controlling actions of the valve and the fan; and the closed-loop ventilation unit is formed among a plurality of gas collecting and exhausting units.